Paper can making machine



1949- M. H. SIDEBOTHAM 2,479,050

PAPER CAN MAKING MACHINE Filed March 21, 1945 9 Sheets-Sheet l Ffgi/ 90Aug. 16," 1949. M. H. Sl DEBOTHAM V 2,479,050

" PAPER CAN MAKING MACHINE Filed March 21, 1945 9 Sheets-Sheet 2 IN V ENTOR.

M. H. SIDEBOTHAM I PAPER CAN MAKINGMACHINE Aug. 16,1949.

9 Shets-Sheet 3 Filed March 21, 1945 Aug. 16, 1949.

Filed March 21, 1945 M. H. SIDEBOTHAM PAPER CAN MAKING MACHINE 9Sheets-Shet 4 Aug. 16, 1949: I M. H. SIDEBOTHAM 2,479,050 I PAPER CANMAKING MACHINE Filed March 21, 1945 v 9 Sheets-Sheet 5 BY Maw/# My Aug.16, 1949. M. H. SlDE BOTHAM 2,479,050

PAPER CAN MAKING MACHINE Filed March 21, 1945 9 Sheets-Sheet 6 HF Mm Afv r m w 5 M m V f N Aug} 16, 1949. v M. H. SIDEBOTHANI- 2,479,050

PAPER CAN MAKING MACHINE Filed March 21, 1945 9 Sheets-Sheet '7 Fly /4-BY W a/ My Aug. 16, 1949. M. H. SIDEBOTHAM IAPER CAN MAKING MACHINE 9Sheets-Sheet 8 Filed March 21, 1945 mm W W A, V N m m 0 l m. m w V 8 NW1949- I M.IH. SIDEBOTHAM 2,479,050

PAPER CAN MAKING MACHINE Filed March 21, 1945 v 9 Sheets-Sheet 9 IN V ENTOR.

Mm fla /95mm BY W M 4795/.

Patented Aug. 16, 1949 UNITED STATES PATENT OFFICE 2,479,050 PAPER CANMAKING MACHINE Melvin n. Sidebotham, Newton, Mass. Application March 21,1945, Serial No. 583,973

15 Claims. (01. 93-292) This invention relates to apparatus forproducing round, paper containers by a sequence of op erations.

More particularly the invention relates to improvements in machines formaking round paper containers by assembling together two cylindricalsleeves and securing a bottom element in one end of the assembledsleeves.

My invention consists in novelties of construction and in thecoordination of novel devices. I do not confine my invention to the formshown, as changes in construction and operation may be made withoutdeparting from the spirit of my invention.

The embodiment of my invention described and claimed in this presentapplication contemplates the production by automatic machinery of papercontainers by the method described in my copending application SerialNo. 556,345, filed September 29, 1944 which has become abandoned.However, my present invention is not limited to machines for producingcontainers by the particular method described in said copendingapplication.

One object of my invention is to provide a machine for assembling onecylindrical paper sleeve over another cylindrical paper sleeve and thensecuring a paper bottom to one end of the sleeve assembly.

Another object of my invention is to provide a machine which will, by asequence of operations produce cylindrical paper containers singly,successively and continuously, in a rapid, economical and efiicientmanner.

Other more specific objects and advantages of the invention will beapparent to persons skilled in the art as the same becomes betterunderstood by reference to the following description, taken inconnection with the accompanying drawings, in which I have illustratedone practical embodiment of my invention, and. wherein:

Figure 1 is a front elevation of the machine.

Figure 2 is a partial section at 22 of Figure 3.

Figure 3 is an elevation of the turret assembly.

Figure 4 is a partial section at 4-4 of Figure 1.

Figure 5 is a partial section at 5-5 of Figure 1.

Figure 6 is a partial section at 6-43 of Figure 1.

Figure 7 is a front elevation of the apparatus for placing cylindricalpaper sleeves over the mandrels of the machine.

Figure 8 is a side view of Figure 7. A

Figure 9 is a front view of themechanlsm which cuts a bottom discelement from a web and inserts the bottom disc element into the end of acylindrical paper sleeve.

Figure 10 is a side elevation of Figure 9 with a portion cut away tomore clearly illustrate the bottom assembling mechanism.

Figure 11 is a front elevation of the device for crimping inwardly endsor" the cylindrical sleeves. Figure 12 is a side view of Figure 11. V

Figure 13 is a front view ofthe device for removing the completed papercontainer from the mandrel of the machine.

Figure 14 is a side view of Figure 13.

Figure 15 is a plan view of one of the mandrels on which the papercontainers are formed.

Figure 16 is a front elevation of Figure 15.

Figure 17 is a planviewoi a mandrel with an inner paper-sleevepositioned thereon. H

Figure 18 is a plan view of the mandrel with an inner paper sleevepositioned thereon, and with a bottom disc assembled within the end ofthe said sleeve; a portion of the bottom former ring 98 and bottomiormerblock I05 are also shown. Figure 19 shows the end edge of thecylindrical paper sleeve turned inwardly over the bottom element; aportion of the crimping tool 35 for turning the end edge of the sleeveis also illustrated. 7

Figure'20 is a plan view of a mandrelwith two comp t d p p r can mountedon a mandrel of the machine; the tool 35 for crimping the ends of theassembled paper sleeves over the flanged edges of the bottom closure isalso shown.

Figure 22 is a side view of the cylindrical paper sleeve which comprisesthe inner member of the Figure 21 is a plan view of the paper container.

Figure 23 is an end view of Figure 22. Figure 24 is an edge view'of thepaper disc from which the bottom on the container is formed.

Figure 25 is a side view of the bottom disc shown in Figure 24.

Figure 26 is a side view of the bottom disc formed to provide a flangethereon.

Figure 27 is an end view of Figure 26. Figure 28 is a side view of theinner sleeve with the flanged bottom disc assembled therein.

Figure 29 is an end view of Figure 28. Figure 30 is thesame as Figure 28except that one end of the sleeve is turned slightly inward over theflanged bottom disc.

Figure 31 i an end viewof Figure 30.

Figure 32 is a side view of the outer, cylindrical sleeve of the papercontainer. 7 v

Figure 33 is an end view of Figure 32.

Figure 34 is a side view of the assembly shown shaft ill. .is slidablysecured to thedriveshaft NJ. The ex- "ternal clutch member ifi'isdrivenby the internal in Figure 30 positioned within the sleeve shown inFigures 32 and 33.

Figure 35 is an end view of Figure 34.

Figure 36 is a side view of the completed paper container.

Figure 3'7 is an end view of Figure 36.

Figure 38 is a partial section at 38-38 of Figure 36.

Similar reference characters indicate .similar parts or features in allof the views.

It will aid toward an understanding of the operation of the machine andof the method-of fabricating the cylindrical paper containers to firstgenerally the action ef the machine which efiects the production ofcylindrical paper containers by a sequence of operations.

Cylindrical paper sleeves I t-Fligs. [22 sand 23) are placed in a supplyhopper 56 (Figs. 1 and .8). From the said supply hopper 56, the papertubes are fed, by gravity, singly and successively into position to bethrust horizontally over a mandrel. The said mandrel is one of sixsimilar mandrels mounted on a-turret which is horizontally pivoted andso actuated as to move each mandrel successively from one position toanother until a paper container is completed and deposited in areceiving hopper.

From the position where the paper sleeve '5 is pressed over one of theman'drels 49, the turret 6 revolves horizontally to move the papersleeve l into position to receive the bottom disc 2 which is cut from aweb and'then formed to provide a flange 3 (Figs. 24 to '29 inclusive).

The mandrel is neXt'moved-t'o a position where the end edgesof'the-s'leeve 1 are turned slightly inward as shown in Figs. 19, '30and31.

The next operation consists' in sliding an-outer paper sleeve '4 (Figs.32 and 33) over the inner paper sleeve I, as-shown in Figure '20.

The sleeve assembly is then movedto a positionto inwardly crimptheadja-cent ends of the sleeves and i-over the "flange 5 3 of thebottom '2, to complete the paper container as shown in Figures 21, 36.and37.

The turret then operates to move the mandrel, carrying the completedcan, to a position where the container is removed "from the mandrel. The

"mandrel is then movedto the first station to receive another papersleeve l'to begin'another cycle of operations.

M achz'ne frame and machineopemting mechanism completemachin-e aresupported'by a baseframe 5 having a'horizontally rotatableturret-.fiwmounted -on itsupper' structure.

Mounted within the base of frame =5 is-an elec -.tric motor '1 fordriving the machine. The said motor 7 is operated continuouslywhile themachine is in use. ,-A pinion .8 (Fig. 6) .mounted .onthe shaft of .the.motor meshes .withedrive gear 9 secured to driveshaft iiljournaledinframe 5. A flywheel H is securedto. one end of the drive Africtionclutch internal.member i2 clutch member l2 operating in the conventionalmanner. Integral with the external clutch member 53 is a pinion M whichmeshes with gear I5 journaled on shaft l8 (Fig. 5). A chain sprocket'l'lis integrally joined to gear'l5. The

-chain sprocket ll servesby-means of chain i9 4. to drive chain sprocketi8 (Fig. 4) secured to shaft 29. Also secured to said shaft 20 is abevel gear 25 which operates in the conventional manner to drive bevelgears 22, 23, 24, 2'5 and 26 which are secured to shafts 27, 28, 29, 3Gand 3! respectively.

Shaft 28 (Fig. 4) drives the mechanism shown in Figures 7 and 8 forpositioning a tubular paper sleeve 1 (Fig.22) over ,themandrel Min thefirst operation .for producing the papercontainer described in Figures22 to 38 inclusive.

Secured to shaft 29 (Fig. 4) is a chain sprocket 32 which operates todrive mechanism, not nec- -;essary to describe, for causing thehorizontally rotatable turret 6 (Figs. 2 and 3) to rotate for moving theWork carrying mandrels secured ithereto, progressively to the severalstations which operate to produce the paper container described. Alsosecured to and driven by shaft 29 (Fig. 4) are cams 83 and 34 whichoperate the -n1echanism shown .in Figures 9 and 10 lfOI die snandrel.Amotor '33 isiprovided-with..a1beltipul- *1ey 34 which by means ofbelt3,6. drivestthe crimpiing tool 35, to turn slightly inwardlyfthe end of:the tubular sleeve Lover therflange-S ofthe bottom disc 2.

*Shaft'Si (Fig.4) operates to-drive'mechanism such as isshownin'Figuresl'l and 8 which operates to feed a tub-ularsleevei (Figs.'32.and.'33) over thetubular sleeve i positioned .on ;the-.man drel.'Thismechanismis-the same as themeclia- 'nism operated by shaft1Z8foriplacing.thetubular sleeve I on the mandrel. '"The only difference"between the mechanismsdrivenby shafts-: zfiand 3! is that the'mechanism driven by shaft 31 is made to handle a paper sleeve ofslightlyilarger dimensions. At this stage of productionthe container isin the condition illustrated "by Figures 34and'35.

Shaft 25 (Fig. 4) serves to drive mechanism of the same character asshown in Figures 11 and '12, previously described as driven byshaft 39.The only difference between :the mechanisms driven by shafts 3i! and '28is that the crimping :tool 35- in the latter instance is pressed furtheragainst the tube assembly on the-mandrel, to

firmly crimp'the adjacent endsof the tubes and 4-against the flange 3 ofthe disc 2,to complete :the paper canes illustrated by'Figures 36-and37.

ihe shaft-'27 '(Fig. 4) operates'the mechanism shown in Figures 13 and'14 for successively removing the completed containers'from the mandrelsand depositing them into a'hopper tel-from whichthey are picked up foruse.

After the 'electric motors l and 331have'been 5 started, the severalcontainerfabricating mecha- 6.

--by means of a hand'lever 3'! (Figs. "1 and 6) secured to'operatingshaft 38 which is operatively :secured irrthe base of franiet. Theoperating shaft'=38 has secure'd'thereto a clutchyoke fi i nisms of themachine are started "and stopped for causing the internal .clutch membert2 to operatively engage external clutch member 33 to start thecontainer fabricating mechanisms. -When'the machine is'to be'stopped"thelever'tl -is operatedto cause'the clutch yoker39'to d-isengage theinternal clutch member 12 TEIOHI the 1' external clutch member 13, thusstopping: the

6 has been omitted for the sake of clarity, any

suitable means may be employed to cause the turret to rotate one-sixthof a revolution and then dwell for a very short interval and then rotateanother one-sixth of a revolution. and'uso on as long as the machine isin operation.

1 While one part of the machine is performing an "operation on onecontainer, other parts of the machine are at the same timeperformingother operations on other containers, all of said containers followingone another progressively around the machine and are delivered therefromas complete paper containers as shown in Figures 36 and 3'1.- i

The turret '6 has secured thereto six mandrel assemblies spacedequidistant about the said tur- -ret; drel-40 (Figs. 2; 3, 15 and 16)having a base Each mandrel assembly includes a manshoulder 42, asecondary shoulder 43 and a mandrel block 4|. Each mandrel block 4| issecured to-a vertical surface of the turret 5. The said mand1el block-4|isprovided with three recesses 44, within whichtie pins" 45 are secured.The

-' outer ends Oftiepins 45 support a face plate 49 which-isprovided witha central opening 41 "through which the tubular sleeves of thecontainer'are fed into position on the mandrel 49.

f-Inperforming certain of thefcan'fabricating,

operations it is' necessary to securely hold the tubular assembly to themandrel;

Pivotally mounted on the upper and lower tie pins 45 of each mandrelassembly are two hold- ;ing brackets, 48 connected together; by tensionspring 49 anchored 'to ends of said gbrackets 48.

The opposite ends ofholding brackets 48-are provided with pins 50 onwhich are rotatably mounted rollers and pivotally mountedclamps '52. Thetension springs 49 serve to hold the sleeve clamp 52 open and againstholding pins 53 which extend inwardly from the face 1 plates 46.

Positioned around and operatively free of the turret 5 are twoclampoperating rings 54, one ring positioned'over and adjacent to themandrel assemblies and the other positioned under and adiacent to thesaid mandrel assemblies. The said clamp operating rings 54 arestationary with respect' to the turret and the mandrel assemblies.

In the operation of the turret 5 the rollers 5| ride on the innersurfaces of the clamp operating rings 54 which are provided with raisedsurfaces55. When the turret 6 is rotated'the rollers 5| at predeterminedpositions ride up onto the raised surfaces 55 of the clamp operatingring, with the result that the rollers 55 are' moved slightly towardeach other causing the sleeve clamps 52 to securely clamp to the mandrelthe tubular paper sleeve mounted thereon.

Sleeve feeding mechanism In the'first operation for producing the papercontainer described, a supply of tubular paper sleeves are placed in asupply hopper 55 (Figs. 7 and 8). The said sleeves l are fed singly andsuccessively into position to be pressed over the mandrel 48 and againstthe outer edge of the secondary shoulder 43. The shaft 28 has its outerend journaled in bracket 51, and has secured thereto a cam 58; and abevel gear 59 which 1 "At this stage of production a paper secured tothe'end of lever secured to'arm 65' of bracket 51 which is mounted topportion of Jaw meshes with bevel'gear 59 secured to shaft 61 'journaled'in said bracket 51.* The rotation of cm 58 actuates the cam follower 62'rotatably 53 pivoted on pin 54 on the base frame -5.;' Integral withthe hub of lever 83 isa lever 55 provided at its outer end with a pin61to whichis connected the lower end of link 58; The-upper end of link68 is pivotally connected by means of pins 69 to the jaw 10 pivoted onpin 1 l'secured'in bracket 51. Thus it will be apparent that therotation of cam 58 will cause the jaw 10' to pivot upwards at intervalsso that 'the 19 will meet the top of fixed jaw 12 which is secured tosaid pin 1| to form ,a closure'for holding a sleeve in position to bepressed over 'ret 6.1

one of the mandrels 40 on the tur- The next operation tobe performed isto press thesleeve l, which is positioned between 'jaws 19 "and 12,'intoposition on the mandrel 40; This is accomplished by' the mechanism nowtobe. de-

scribed. The bevelgear 59 (Figs. 7 and 8) meshes {with and'drives'bevel.gear'60which is secured to "A cam wheel 13 is secured to and is drivenby said shaft 5|." A cam follower 14,'which -is operatively retainedwithin cam race 15 of the cam wheel 13, is rotatably secured to the endof cam follower lever 16; which is'pivoted on pin 11 secured to bracket51. "A lever 18 is secured to the said pin' 11. The upper end .of saidlever 18 is pivctally connected to one endof link 19. The other end ofthe link 1,9.is'piv0ta1ly connected to the outerend' of thrustrod-EBDwhich is'slidably' held by hearing 8l'secured to bracket 51. The innerend of the thrust'rod supports a 'thrustj plate 82 which operatestopress the paper sleeve positioned between jaws 19 and 12 into positionon the mandrel 49. 'It'will. be obvious that the rotation of cam wheel13 will actuate the several elements just described to place papersleeves on the 'm andrels in the sequence described. sleeve is inposition on mandrel 40. The turrets5 .is then rotated one-sixth of arevolutiomwith' theresult that themandrel 49 with the sleeve positionedthereon isadvanced to a station to have a bottom disc 2 inserted intothe end of the sleeve I. While the'mandrel 40 carrying the sleeve isbeing advanced, another mandrel is at the same time being advanced intoposition to receive a paper sleeve thereon; 1

Bottom forming mechanism 5 Referring toFigures 1, 9 and 10, thereis'illus trated mechanismffor forming and inserting a bottom disc/2 intothe end of the paper sleeve 1 positioned, on mandrel 49;

, In the operation-for providing a bottom for the container, a supplyroll of paper is rotatably supported onstandards 9| secured 'to asupport block 92, mounted on plate86 secured ,to base 'frame5. ,From.the supply roll 9|] a web 98 of paper'is drawn at predeterminedintervals by means not necessary to describe; The web 98 is advancedoverroller 93w rotatably 'journaled in bearings 94 secured to bearingplate 95 supported by. plate'86a' From the roller 93 the web passesdownward and between a die block 91 and a former ring 98. The die block91 is secured to the'top plate 86 and braced by angle 99 secured tobearing plate 95.. The formlervring 98 'is also supported by plate, 85.Slidably mounted inthe die" block 9.1;isj a; punching'die I 00 whichSerVS to cut a bottom disc 2 (Figs. 24 and-25)- from the produce an assemblyas shown in Figures 34 and 35.

Mechanism for assembling the outer sleeve on the inner sleeve of thecontainer The mechanism which positions the outer sleeve 4 over theinner sleeve I is substantially the same in all respects as themechanism which positions inner sleevev I on the mandrel 40 in the firstoperation of the machine. The only differences being a slight differencein the size of parts, made necessary by the differences in the size ofthe inner and outer sleeves. The mechanism illustrated by Figures 7 and8 will serve to illustrate the means for assembling the outer sleeve 4over inner sleeve I at the fourth station of the ma- (shine. The shaft3I (Fig. 4) operates in the same manner as shaft 28 to Operate mechanismshown in Figures '7 and 8.

After the outer sleeve 4 has been positioned over the inner sleeve I inthe fourth operation of the machine, the turret 6 is again rotatedonesixth of a revolution to advance the container assembly to theposition where the adjacent ends of the outer and inner sleeves I and 4are crimped tightly over the flange 3 of the bottom closure disc 2. r

Mechanism for performing the final crimping operation ,The' mechanismfor performing the final crimping operation acts to crimp the adjacentends of sleeves I and 4 to the condition illustrated by Figures 36, 37and 38. This mechanism is substantially the same in all respects as themechanism illustrated by Figuresll and 12; The only difference beingthat the crimping tool 35 is thrust further against the end of thecontainer in the final crimpin operation than is done in'the firstcrimping operation.

After the final crimping operation the turret 6 is again advancedone-sixth of a revolution to therposition'where the completed containeris removed from the mandrel 40.

Mechanism for discharging the completed containers from the machine Whenthe completed container positioned on mandrel 40 reaches the sixthstation of the machine, opposite the mechanism operated by shaft 29which is shown in Figures 4, 13 and 14, the container is removed fromthe mandrel 40. The outer end of shaft 29 is journaled in dischargebracket I30 which is secured to base frame 5. Also secured to shaft 29is a bevel gear I3I which meshes with bevel gear I32 secured to shaftI33 journaled in said bracket I30. A cam wheel I34, secured to anddriven by said shaft I33, is provided with a cam race I35. A camfollower I36 operatively positioned in cam race I35 is rotatably securedto the lower end of lever I31 pivoted on'pin I38 secured in bracket I30.The upper end of lever I31 has a fork member I39 engaging pins I40 onpull hub I4I slidably mounted on fixed shaft I42 which is secured in theupper end of bracket I30. The said pull hub I4I has a downwardlyextending bar I43 to which is fastened a suction cup I44. The saidsuction cup I44 is provided with an air valve the stem I46 of whichextends through the bar. I43.- In its normal position the valve isclosed so that no air may pass into the cup except through the openmouth I45, but by? outside means, air is admitted through the valve and.into the suction cup I44, even though when the valve stem is pressed 10the mouth of the suction cup is closed by being pressed against thebottom of a container.

A receiving hopper I41 secured to bracket I30 is provided to receive thecontainers from the machine. Secured to the upper portion of hopper I41,horizontally opposite the suction cup I44, is a. trip bar I48 forengaging the valve stem I46 when the suction cup has drawn a containerfrom the mandrel and positioned it over the discharge hopper I41. In theoperation of this discharging mechanism the rotation of cam wheel I34actuates lever I31-first to press suction cup I44 against the bottom ofthe completed container, in the conventional manner, to secure thcontainer to the suction cup. The lever I31 then acts to draw thesuction cup and the container to a position over the hopper I31. Whenthis position is reached the valve stemv I46 engages the trip bar I43,causing air to enter the suction cup I44, thus removing the suctionwhich causes the container to adhere to the suctioncup and permittingthe container to fall into the discharge hopper I41 where the containeris picked up for use;

After the completed container isremoved from the machine, the turret 6is again advanced onesixth of a revolution to present the mandrel, fromwhich a completed container was removed to position to receive anotherpaper sleeve I to begin another cycle of operations to produce another,container.

Having now described my invention, I claims 1. In a machine for makingcylindrical, paper containers of the character described, comprisingmeans for positioning a paper sleeve on the end of a mandrel mounted ona horizontally rotatable turret, apparatus for cutting, forming andinserting a bottom disc into the end of the sleeve, a crimping tool forturning one end of the sleeve inward, means forpositioning a secondpaper sleeve over the first sleeve on the mandrel, a second crimpingtoolfor crimping adjacent ends of the sleeves tightly against the bottomdisc, and a device for drawing the container from. the

mandrel.

2. In a machine for making double walled, cylindrical, paper co'tainers; a base frame having a horizontally rotatable turret mountedthereon; six horizontally extending mandrels'secured to andjspaced eqdistant about the turret; a device for placing inner wall, paper sleevessingly and successively upon the mandrels, leaving the outwardlyextending ends of the sleeves free of the'mandrels; a die for'cuttingbottom discs from a web of paper; a former block and a former ring forforming a flange on each bottom disc; means for advancing each formedbottom disc from the former ring and inserting it within the end of thecorresponding paper sleeve; a crimping tool for turning the free end ofeach sleeve'slightly inward; a device'for sliding an outer wall papersleeve over each inner wall paper sleeve; a crimping tool for crimpingthe free ends of the inner and outer wall sleeves tightly'over theflange on the bottom disc; and a device for drawing the completedcontainers singly and successively from the mandrels;

3. In a machine for makin double walled, cylindrical, paper containers;a base frame having a horizontally rotatable turret mounted thereon; sixhorizontally extending mandrels secured to and spaced equidistant aboutthe tur-. ret; a device for placing inner wall, paper sleeves singlyand'successively upon the mandrels, leaving. the outwardly extendingends of the sleeves a rees-c free of themandrels; means for cutting,forming and inserting a bottom into the free end of each paper sleeve; acrimping tool'for turning the free;

drawing the completedcontainers from th mandrels;

4. In a machine for making double walled, cylindrical, paper containers;abase frameha'v ing a horizontally rotatable turret mounted thereon; a;plurality of horizontally extending mandrels secured to-and spacedequidistant about theturret; a device for placing inner wall papersleeves singly and successively upon the mandrels;

leavin'g the outwardly extending ends of-the sleeves freeof themandrels; means for cutting,

formiii'gand'in'serting a bottom into thefree end o'feach paper sleeve;a crimping tool for turning-1 the freeend of each sleeveslightl inward;a device' for sliding an outer wall paper sleeve over each inner wallpaper sleeve; a crimping tool for crimping the' c'ombined free ends ofthe inner and outer wall sleevesagainst the bottom disc and-= mechanismfor drawing the completed containers" fromthe mandrels.

5' In a machinefor'making double walled cylindrical paper containers; abase frame having a rotatable turret mounted thereon; a plurality ofoutwardly extending mandrelss'ecured' to and spaced about the turret; adevice for placing inner wallpaper Sleeves singly and successively uponthe mandrels, leaving" the outwardly 6X tendingends of the'sleeves freeof the mandrels; means for cutting; forming and inserting a' bot tominto the free end' of crimping; tool for turning sleeve inwardly;adevice forsliding' an outer wallpaper sleeve over each inner wall.paper sleeve and a crimping tool for crimping. the combined free ends ofthe inner and outer wall sleeves against the bottom disc.

6, In a machine, for making double walled, cylin'drical papercontainersia base framehaving a rotatable turret mounted thereon; aplurality of outwardly extendingv mandrels' secured to" and spaced aboutthe turret; a device for placing inner wall apersleeve's' singly andsuccessively upon' the mandrels, leaving the outwardly ex-' tending endsof the sleeves free from the man-. drels; means for cutting, a bottominto the free end of each paper sleeve; adevice'for sliding an outerwall paper sleeve over eachinner wall paper sleeve; andjacrimping tool?forv crimping-the combined free ends of theinnerandouter wall'sleevesagainst the bottom disc.

7. Ina machine for making double Walled, cylindrical paper containers; abase frame having a. rotatable'turret mounted thereon; amandrel secured:to the turret; means for positioning an. inner wall paper sleeve uponthe mandrel, leaving one end of the sleeve free of the mandrel; a' diefor cutting bottom discs-from a web of paper; a former block anda.former ring for making aflange oneach bottom disc; means. for advancingeach formed bottom disc from the former ringv and inserting itwithin-thefree end: of the paper sleeve; a crimpingdevice for turningthe free" end of'the sleeve slightly inward; a devicefor sliding an--outer wall paper sleeveover' the inner wall paper sleeve; a crimpingtool for each paper sleeve; a' the free end of each forming; andinserting? crimping the free ends of the inner and outer" wall sleevestightly over the flange on the bottom disc; and a device for drawing thecompleted container 7 fromthemandrel.

8. In a machine for making double walled, cylindrical; paper containers;a base frame having a rotatable turret mounted'thereon; a' mandrelsecured to the turret; means for positioning: aninner wall paper sleeveupon the mandrel,

leaving one end of the sleeve-free from the mam,

drel; apparatus for cutting, forming and insert-- ing; a bottom discwithin the free end of the:

sleeve; a crimping device forturning the free'end ofthesleeveslightlyinward; a device for sliding an outer wall paper sleeve over theinner wall paper sleeve; and a crimping tool for crimping the'f'reeendsof the inner and outer sleeves tightly against thebottom disc. N 9.In a machine for making double walled;

cylindrical, paper containers; a base framejhaving arotatable turretmountedthereon; a mandrel' secured tothe turret; means for positioningan inner'wall paper sleeve upon the mandrel, leaving one end of thesleevefree from the man- 'drel; means for inserting a bottom disc withinthe free endof tiie'sleeve;' a crimping device for turning the free endof the sleeve slightly inward; a device for placing an. outer wall.paper sleeve over the inner wall paper sleeve; and a crimping tool forcrimping the. free ends of the combined inner and outer sleeves tightlyagainst the bot-- to'mvdisc.

10. In a machine for making double walled; cylindrical; papercontainers; at base framehaving a rotatable turret mounted; thereon; amandrel secured'to the turret; means forpo's'iti'oning an inner wallpaper sleeve upon the. mandrel leaving one end'of the'sleev'e free-fromthe mandrel; means for inserting. a bottom disc within the free endofthe sleeve; a device for positioning an outer wall' paper sleeve overthe innerwall paper sleeve; anda crimpin'grtool forcrimping the freeends of the combined inner andjout'er sleeves tightly against the bottomdisc.

1 1 Ina machine for making double walled} cylindrical, paper containers;a mandrel for holding the containerelementsin position; while thecontainer fabricating operations are being performed; a. device forpositioning an inner wall paper sleeve upon themandrel, leaving: one endof the sleeve. free from the mandrel, means for insertinga bottomelement withinthe freeend-of the sleeve; a crimping tool for turning.the free end of the sleeve slightly inward; a. device for positioning anouter wallpaper sleeve over the inner wall paper sleeve; anda crimpingtool for crimping: the 'freeendsof the combined inner and outer sleevestightly against. the bottomelement.

12; In=amachine for. making double walled cylindrical paper containers;a mandrel for holding the container elements ll1 pOSlti0n while thecontainer fabricatin woperations are being. performed; a device forpositioning an inner wall paper sleeve-upon the mandrel, leaving one endor thesleeve projecting from the end-of thefmandrel; means forinsertinga-bottom element within the projecting endwof thev sleeve; a;sleeve assembling deviceiorpressingian' outer; wall paper sleeve. overthe inner wallxpapen sleeve;,,and a crimping to 01 for crimping the projeating; ends: of: the 1 combined inner and outer sleevestightly againstthe bottom'elementb V 13. In a machine for making double walled papercontainers a mandrel for holding the con slightly inward over tainerelements in position while the container fabricating operations arebeing performed; means for pressing an inner wall paper sleeve over theend of a mandrel; means for inserting a bottom element within the papersleeve; a sleeve assembling device for pressing an outer wall papersleeve over the inner wall paper sleeve; and a crimping tool forcrimping one end of the combined inner and outer sleeves tightly againstthe bottom element.

14. In a machine for making double walled containers; a mandrel forholding the container elements in position while the containerfabricating operations are being performed; means for pressing a sleeve,comprising the inner wall of the container, over the end of the mandrel;a former block for inserting a bottom element within the sleeve; a toolfor turning one end of the sleeve the bottom element; a sleeveassembling device for pressing an outer wall sleeve over the inner wallsleeve; and a tool for curling one end of the combined inner and outersleeves tightly against the bottom element.

15. In a machine for making double walled containers; a base frame forsupporting the several elements of the machine; a turret rotatablymounted on the base frame; a mandrel secured to the turret for holdingthe container elements sleeve over the inner wall sleeve;

in position while the container fabricating o era tions are beingperformed; means for positioning a sleeve which comprises the inner wallof the container over the end of the mandrel; a former block forinserting a bottom element within the sleeve; a tool for turning one endof the sleeve slightly inward over the bottom element; a sleeveassembling device for pressing an outer wall a tool for curling one endof the combined inner and outer sleeves tightly against the bottomelement; and a suction cup operating device for drawing the containerassembly off the end of the mandrel.

MELVIN H. SIDEBOTHAM.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

